Dwarf Fortress Bug Tracker - Dwarf Fortress
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IDProjectCategoryView StatusDate SubmittedLast Update
0007662Dwarf FortressWorld Generation -- Generalpublic2014-07-27 10:252014-07-27 15:08
ReporterLoci 
Assigned ToFootkerchief 
PrioritynormalSeverityminorReproducibilitysometimes
StatusassignedResolutionopen 
PlatformOSOS Version
Product Version0.40.04 
Target VersionFixed in Version 
Summary0007662: Ocean shores generated with non-porous rock (dacite, shale), no aquifer
DescriptionI have embarked along several oceans which supposedly contain aquifers, however the "beach" is some sort of non-porous rock (dacite or shale) which is unable to contain an aquifer. It is possible to dig straight down from the "beach" into the caverns, so the aquifer isn't just being pushed further down.
Steps To Reproducegenerate a world and embark on an ocean shore
Additional Information
TagsNo tags attached.
Relationships
related to 0005966new  An error in Aquifer placement code. 
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2014-07-27 10:25LociNew Issue
2014-07-27 12:38FootkerchiefNote Added: 0027703
2014-07-27 12:38FootkerchiefAssigned To => Footkerchief
2014-07-27 12:38FootkerchiefStatusnew => needs feedback
2014-07-27 14:38LociNote Added: 0027712
2014-07-27 14:38LociStatusneeds feedback => assigned
2014-07-27 14:59FootkerchiefNote Added: 0027714
2014-07-27 14:59FootkerchiefStatusassigned => needs feedback
2014-07-27 15:00FootkerchiefNote Edited: 0027714bug_revision_view_page.php?bugnote_id=0027714#r10468
2014-07-27 15:00FootkerchiefRelationship addedrelated to 0005966
2014-07-27 15:08LociNote Added: 0027719
2014-07-27 15:08LociStatusneeds feedback => assigned

Notes
(0027703)
Footkerchief   
2014-07-27 12:38   
Are you sure there's not an aquifer that starts further from the beach?
(0027712)
Loci   
2014-07-27 14:38   
Sure, other biomes that claim to have aquifers generally do have aquifers. Ocean biomes that claim to have an aquifer, though, are (more?) problematic.

On my fourth attempt, I found a red sand beach with the expected aquifer layers below the beach.

On my fifth attempt, I found a conglomerate "beach" with aquifer layers below the beach. However, the neighboring biome which was also supposed to have an aquifer did not.

So I guess the problem really boils down to the embark screen's aquifer statements being unreliable.
(0027714)
Footkerchief   
2014-07-27 14:59   
(edited on: 2014-07-27 15:00)
If it's erratic, a save (preferably with an active fortress) would be helpful. Please upload one to http://dffd.wimbli.com/ [^] and post the link here.

edit: would 0005966 explain this?
(0027719)
Loci   
2014-07-27 15:08   
Yes, that is a much more direct statement of the problem. I'd still like to see more sand beaches and fewer stone "beaches", but that's probably more of a suggestion than a bug.